<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>超大背景图片</title>
    <style>
      body {
        background-image: url(images/bg.jpg);
        background-repeat: no-repeat;
        /* background-position: center top; */
        background-position: center 40px;
      }
    </style>
  </head>

  <body></body>
</html>
